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Finding the Fourth Proportional to 70,881.98, 97,821.54 and 39,050.87

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Solution

The fourth proportional to 70,881.98, 97,821.54 and 39,050.87 is: 53,892.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,881.98 : 97,821.54 = 39,050.87 : x
  2. Step 2: Convert to fraction form
    70,881.98/97,821.54 = 39,050.87/x
  3. Step 3: Cross multiply
    70,881.98x = 97,821.54 × 39,050.87
  4. Step 4: Simplify right side
    70,881.98x = 3,820,015,752.63
  5. Step 5: Solve for x
    x = 3,820,015,752.63/70,881.98
  6. Step 6: Final answer
    x = 53,892.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.